Rule 34 Dev - 1boy 2010s 2018 2d 2d_(artwork) animated_skeleton blue_blush blush bottom_sans bottomless bottomless_male clothed clothing crying digital_media_(artwork) embarrassed exposed exposed_crotch grabbing_clothing hooded_jacket hoodie humanoid jacket legs_apart legs_spread male male_only malesub monochrome monster monster_boy nsfwgarbagedump one_eye_closed pantsless partially_colored pixiv_id_36285069 sans sans_(undertale) shoes shy skeleton slippers socks solo spread_legs submissive submissive_male tears uke_sans undead undertale undertale_(series) video_game_character video_games white_background|1017003